Project Euler 19. Too many Sundays

From Euler:1 Jan 1900 was a Monday. How many Sundays fell on the first of the month during the twentieth century (1 Jan 1901 to 31 Dec 2000)?

My first function collects every day into a list starting from the known Monday and ending on Dec 31, 2000. The second function saves every seven days into a list of Sundays beginning with the first Sunday in 1901.